Coolant Condition Check

WARNING:
NEVER REMOVE THE PRESSURE RELIEF CAP UNDER ANY CONDITIONS WHILE THE ENGINE IS OPERATING. FAILURE TO FOLLOW THESE INSTRUCTIONS COULD RESULT IN DAMAGE TO THE COOLING SYSTEM OR ENGINE AND/OR PERSONAL INJURY. TO AVOID HAVING SCALDING HOT COOLANT OR STEAM BLOW OUT OF THE COOLING SYSTEM, OR RADIATOR COOLANT RECOVERY RESERVOIR (8A080), USE EXTREME CARE WHEN REMOVING THE PRESSURE RELIEF CAP FROM A HOT COOLING SYSTEM OR RADIATOR COOLANT RECOVERY RESERVOIR. WAIT UNTIL THE ENGINE HAS COOLED, THEN WRAP A THICK CLOTH AROUND THE PRESSURE RELIEF CAP AND TURN IT SLOWLY UNTIL THE PRESSURE BEGINS TO RELEASE. STEP BACK WHILE THE PRESSURE IS RELEASED FROM THE COOLING SYSTEM. WHEN CERTAIN ALL THE PRESSURE HAS BEEN RELEASED, (STILL WITH A CLOTH) TURN AND REMOVE PRESSURE RELIEF CAP.

1. Turn the engine OFF.
2. Check engine coolant for dirty or rusty appearance. Dirty or rusty coolant must be replaced to protect the cooling system from corrosion damage. Replace the coolant.
3. If coolant condition is satisfactory, check coolant concentration for proper protection level. Use Rotunda Battery and Anti-Freeze Tester 014-R1061 or equivalent or a Hydrometer for testing. Maintain a protection level of at least -30°C (-20°F) to preserve anti-rust corrosion protection and ensure proper engine operating temperature.
4. If concentration level is low, partially drain the cooling system by opening the radiator draincock (8115) or by partially removing the lower radiator hose (8286) at the radiator (8005). Secure the radiator draincock or hose clamp and add 100 percent concentration of coolant such as Ford Premium Cooling System Fluid E2FZ-19549-AA or-B (in Canada, Motorcraft CXC-8-B) that meets Ford specification ESE-M97B44-A to obtain the recommended protection level. Wet the rubber sealing surface of the pressure relief cap before installing the pressure relief cap tightly on radiator coolant recovery reservoir.